\begin{equation*}
	f(X) = \int_{-\infty}^{X} p(X)~dX =
	\begin{cases}
		0,               & X < -1                \\
		\frac{X + 1}{2}, & -1 < X < 1,           \\
		1,               & \text{caso contrário}
	\end{cases}
\end{equation*}

one two three four one two three four one two three four \test{test five six
	seven eight nine} ten eleven twelve thirteen fourteen fifteen sixteen seventeen
